Its b dont worry your right
The introduction should introduce your main character, setting, location and time. it should also either introduce the main complication, start heading for the main complication or foreshadow the main complication.
An intervening period of time
The correct answer is D) had become
This is because, if you say each answer choice out loud with the rest of the question, you can easily identify which answer choice fits best. Also, you should analyze the text for any context clues to help you find the answer.